Staff / Principal .NET Engineer (AWS)

About the Role:

We are looking for an experienced Staff / Principal .NET Engineer with deep expertise in .NET, AWS, and distributed systems to join one of our long-term projects.

In this role, you will serve as a senior technical leader, driving architecture and engineering decisions while remaining hands-on with development. You will work on designing and delivering scalable, secure, and maintainable software solutions, mentor engineers through technical leadership, and help shape the long-term technical direction of the platform.

The ideal candidate combines strong software engineering expertise with architectural thinking, enjoys solving complex technical challenges, and leads by example through high-quality code and sound technical decisions.

Responsibilities:

• Design, develop, and maintain scalable software applications using C#/.NET technologies.
• Drive technical architecture decisions and ensure the implementation of scalable, maintainable, and secure solutions.
• Design, develop, and maintain microservices-based architectures.
• Build and maintain high-performance REST APIs.
• Develop cloud-native solutions using AWS services, including Lambda and SQS.
• Design efficient and scalable relational database solutions using Microsoft SQL Server.
• Take ownership of complex technical initiatives from architecture through implementation and delivery.
• Analyze business requirements, estimate engineering efforts, and define technical implementation strategies.
• Write clean, maintainable, and well-tested code with a strong focus on Unit Testing and Definition of Done principles.
• Conduct code reviews and establish engineering best practices, coding standards, and software quality guidelines.
• Mentor and support engineers through technical guidance, knowledge sharing, and architectural reviews.
• Collaborate closely with Product Owners, Business Analysts, QA Engineers, and other stakeholders to deliver business value.
• Identify technical risks, resolve complex engineering challenges, and continuously improve system performance, reliability, and maintainability.
• Evaluate new technologies and recommend improvements where appropriate.
• Utilize AI-powered development tools to improve engineering productivity.

Requirements:

• 8+ years of commercial software development experience with C#/.NET Core and .NET Framework.
• Proven experience as a Staff Engineer, Principal Engineer, Technical Lead, Development Lead, or similar senior technical individual contributor role.
• Strong experience designing and building microservices-based architectures.
• Hands-on experience with AWS services, including Lambda, SQS, and cloud-native application development.
• Strong experience with Microsoft SQL Server (MSSQL) and relational database design.
• Extensive experience designing and developing REST APIs.
• Strong understanding of software architecture, distributed systems, design patterns, and software engineering best practices.
• Experience driving architectural decisions and leading complex technical initiatives.
• Strong experience conducting code reviews and mentoring engineers.
• Experience working in Agile development environments.
• Advanced or higher level of English.

Nice to Have:

• Experience with containerization technologies (Docker, Kubernetes/EKS).
• Experience with CI/CD pipelines and DevOps practices.
• Experience with Infrastructure as Code (Terraform, CloudFormation, or similar).
• Experience working with AI-powered development tools.
• Experience modernizing legacy systems and migrating applications to cloud-native architectures.
• Experience working with event-driven architectures and messaging systems.

What We Offer:

• Opportunity to work on a long-term international project with modern technologies.
• Challenging technical problems and the ability to influence architectural decisions.
• A collaborative engineering culture focused on quality, continuous improvement, and knowledge sharing.
• Professional growth in a team of experienced engineers.
• Flexible working environment and opportunities for continuous learning.